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configure.ac
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configure.ac
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# Copyright (C) 2017 Yann Pouillon <devops@materialsevolution.es>
#
# Process this file with autoconf to produce a configure script.
#
# Enhance help message (must be set before anything else)
m4_divert_text([HELP_END], [
More information on how to configure the build of LibFDF is available
in the doc/ subdirectory of the source tree, in particular in the
configuring-libfdf.md file.])
# Init Autoconf
AC_PREREQ([2.69])
AC_INIT([LibFDF], [0.2.2],
[https://bugs.launchpad.net/libfdf],
[libfdf],
[https://launchpad.net/libfdf])
AC_CONFIG_AUX_DIR([config/gnu])
AC_CONFIG_MACRO_DIR([config/m4])
AC_CONFIG_SRCDIR([src/fdf.F90])
# Init Automake (assume GNU Make for now)
AC_CANONICAL_TARGET
AM_INIT_AUTOMAKE([1.13 parallel-tests color-tests])
AM_CONFIG_HEADER([config.h])
# Generate timestamp
fdf_timestamp=`date '+%Y%m%dT%H%M%S%z'`
AC_SUBST(fdf_timestamp)
# ------------------------------------ #
#
# System utilities
#
# Check for common programs and features
AC_PROG_AWK
AC_PROG_GREP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_SED
# Workaround for the wrong path to install-sh on Mac systems
AX_PROG_MKDIR_P
# Init variables
fdf_core_incs=""
AC_SUBST(fdf_core_incs)
# ------------------------------------ #
#
# Default settings
#
# Note for developers: you may edit these parameters to tune the behaviour
# of the build system. Please do it with care.
# Optional features
fdf_debug_enable_def="no"
# ------------------------------------ #
#
# Check consistency of defaults
#
# Default triggers for optional features must be yes or no, and not empty
for fdf_cfg_default in debug; do
tmp_default=`eval echo \$\{fdf_${fdf_cfg_default}_enable_def\}`
if test "${tmp_default}" != "no" -a \
"${tmp_default}" != "yes"; then
AC_MSG_ERROR([invalid default value: fdf_${fdf_cfg_default}_enable_def = ${tmp_default}])
fi
done
# Clean-up
unset tmp_default
# ------------------------------------ #
#
# Optional features
#
# Debugging
AC_ARG_ENABLE([debug],
[AS_HELP_STRING([--enable-debug],
[Enable verbose function output (default: ${fdf_debug_enable_def})])],
[fdf_debug_enable="${enableval}"; fdf_debug_type="yon"],
[fdf_debug_enable="${fdf_debug_enable_def}"; fdf_debug_type="def"])
AC_SUBST(enable_debug)
# ------------------------------------ #
#
# Check option consistency
#
# All --enable-* options must be yes or no
for fdf_cfg_option in debug; do
tmp_option=`eval echo \$\{enable_${fdf_cfg_option}\}`
if test "${tmp_option}" != "" -a \
"${tmp_option}" != "no" -a \
"${tmp_option}" != "yes"; then
AC_MSG_ERROR([--enable-${fdf_cfg_option} must be "yes" or "no"])
fi
done
unset tmp_option
# ------------------------------------ #
#
# Substitute build-system variables
#
# Defaults
AC_SUBST(fdf_debug_enable_def)
# Triggers
AC_SUBST(fdf_debug_enable)
# Initialization types
AC_SUBST(fdf_debug_type)
# ------------------------------------ #
#
# C language support
#
# Init C compiler and preprocessor
if test "${CC}" != "" -a ! -x "${CC}"; then
fdf_cc_probe=`echo "${CC}" | sed -e 's/ .*//'`
if test ! -x "${fdf_cc_probe}"; then
AC_PATH_PROG([fdf_cc_path],[${fdf_cc_probe}])
if test "${fdf_cc_path}" = ""; then
AC_MSG_ERROR([could not run C compiler "${CC}"])
fi
fi
fi
AC_PROG_CC
AC_PROG_CPP
# ------------------------------------ #
#
# Fortran language support
#
# Init Fortran compiler
if test "${FC}" != "" -a ! -x "${FC}"; then
fdf_fc_probe=`echo "${FC}" | sed -e 's/ .*//'`
if test ! -x "${fdf_fc_probe}"; then
AC_PATH_PROG([fdf_fc_path], [${fdf_fc_probe}])
if test "${fdf_fc_path}" = ""; then
AC_MSG_ERROR([could not run Fortran compiler "${FC}"])
fi
fi
fi
AC_PROG_FC
# Enforce strict file extensions
fdf_fc_src_ok="unknown"
AC_FC_SRCEXT([F90], [fdf_fc_src_ok="yes"], [fdf_fc_src_ok="no"])
if test "${fdf_fc_src_ok}" != "yes"; then
AC_MSG_WARN([Fortran file extension could not be changed])
AC_MSG_WARN([Fortran tests may fail])
fi
# Look for the iso_c_binding module
fdf_fc_iso_c_binding="unknown"
AC_MSG_CHECKING([for the ISO_C_BINDING Fortran module])
AC_LANG_PUSH([Fortran])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[use iso_c_binding]])],
[fdf_fc_iso_c_binding="yes"],
[fdf_fc_iso_c_binding="no"])
AC_LANG_POP([Fortran])
AC_MSG_RESULT([${fdf_fc_iso_c_binding}])
if test "${fdf_fc_iso_c_binding}" != "yes"; then
AC_MSG_ERROR([the Fortran compiler does not provide
the iso_c_binding module.
This probably happens because this compiler
is an antiquity.
Please disable Fortran support or use a modern
Fortran compiler.])
fi
# Fortran compiler peculiarities
AX_F90_MODULE_EXTENSION
AC_SUBST(ax_cv_f90_modext)
AX_F90_MODULE_CASE
# Language mixing
#AC_FC_WRAPPERS
# Inform Automake
AM_CONDITIONAL([F90_MOD_UPPERCASE],
[test "${ax_cv_f90_mod_uppercase}" = "yes"])
# ------------------------------------ #
#
# Libtool configuration
#
# Init Libtool (must be done once compilers are fully set)
LT_INIT
LT_PREREQ([2.4])
LT_LANG([Fortran])
LTOBJEXT="lo"
AC_SUBST(LTOBJEXT)
# ------------------------------------ #
#
# Build-system configuration checkpoint
#
# Write down YAML configuration before any final check
AC_OUTPUT([config/data/libfdf-config.yml])
# ------------------------------------ #
#
# Adjust build parameters according to configure options
#
# Debugging support
if test "${fdf_debug_enable}" = "yes"; then
AC_DEFINE([FDF_DEBUG], 1, [Define to 1 to enable internal debugging.])
fi
# ------------------------------------ #
# Output configuration
AC_CONFIG_FILES([
Makefile
config/data/libfdf.pc
doc/Makefile
src/Makefile
tests/Makefile])
AC_OUTPUT
# Report configuration
AC_MSG_NOTICE([
Final build parameters
----------------------
TSTAMP = ${fdf_timestamp}
DEBUG = ${fdf_debug_enable} (init: ${fdf_debug_type})
CPP = ${CPP}
CPPFLAGS = ${CPPFLAGS}
CC = ${CC}
CFLAGS = ${CFLAGS}
FC = ${FC}
FCFLAGS = ${FCFLAGS}
LDFLAGS = ${LDFLAGS}
LIBS = ${LIBS}
])